In my opinion the perhaps the best accelerated traditional hand drawn 2D course in the LA area is the one I teach when I'm teaching it. It's basic and effective. For online classes try a Google search for '2d animation course online' or 'traditional animation course online' and see what comes up. Word of caution based upon what I've heard about the school, avoid The Art Institute franchise. Google shows they have online classes for 2D animation but I'd go someplace else. You can also try YouTube and see what's happening there.